"relational algebra in dbms" Code Answer's
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what is relational database
Obedient Ocelot
on Jan 07, 2021
Relational Database =
-Tables are structured related to each other
-Each specific type of domain data is strored
it's own table
Non-Relational Database =
-There is no relation at all between tables
-Mostly key+value pair : like jSonwhat is relational database
Obedient Ocelot
on Jan 27, 2021
Relational Database Management System
(RDBMS) means that tables in
database are related using
primary/foreign key relationship. Used to store,
modify and retrieve data in the database.
• How are they related?
Primary Key (unique and not NULL)
Foreign Key (duplicate and NULL)
• What type of database system you have expertise with?
RDBMS, such as SQL and Oracle
• Entity Relation Model (ERM):
An entity can be a real-world object, that can
be easily identifiable: student, class, teacher.
• Attributes:
Things that describe the Entity. (student name, age, birthday…)relational algebra in dbms
Fierce Fish
on Feb 21, 2021
R
(A B C)
----------
1 2 4
2 2 3
3 2 3
4 3 4Source: www.geeksforgeeks.org
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